HN's approach to this has been the same for many years: when a story has had significant attention within the last year or so, we bury reposts as dupes. That doesn't mean it isn't an important story!

This is in the FAQ: https://news.ycombinator.com/newsfaq.html

When a story is a major ongoing topic (as this one may be), we treat it as a fresh story each time significant new information (SNI) comes up. See https://hn.algolia.com/?dateRange=all&page=0&prefix=false&so... for past explanations. If someone can point to SNI in this case, I'd be happy to take a look.